Well what happened next?
Well they decided to try and track the boot prints - and the module says nothing about this idea, so it's improv time. I figure that Glasstaff would head towards the Redbrands hideout in Phandalin, the sleeping giant. There I could plausibly confuse the trail (from all the other Redbrands around) because I'm not sure you should just be able to find a main character just like that (otherwise why don't monsters with tracking simply find the PC's all the time - they don't. People who want to be special characters who get to ignore half the rules of the world are a bit too metagame for me). And maybe they could find the Ruffian who took the spoils of the gaming table in the dungeon before, as a sort of compromise towards their tracking efforts.
So they approach the sleeping giant inn - with two Redbrands on guard duty at the door. I think the dwarf fighter noble called Murden intimidated them (nat 20, I believe?), and while they were intimidated maybe they let slip the guy the party was tracking was hiding out in a shed in the back - so they just started walking around the back openly. Well, the rogues may have stealthed, but Murden and the druid just strode around, where Murden proceeded to just kick in the door of the shed - another nat 20! Boom, the door flies inward and the startled redbrand has it hit him in the temple side on, instantly knocking him out! They grab the remains of the loot from the gaming table!
Now technically this would be a little loud - but on the other hand the second nat 20 was so cool it was kind of enjoyable to just have the PC/player have the badass moment without having to throw in whatever complications you might think might occur. Pure realism tends to dash just having a good spotlight moment.
At this point the townmaster of Phandalin spots them lurking around the side - and the townmaster, being afraid of the redbrands, tries to distract the PC's he sees with a quest to beat up some orcs at Wyvern Tor. The PC's he can see assure him they will, with some diplomacy checks and walking in with him to town...then going right back to the sleeping giant afterward!
Meanwhile the sneaking types, Tumbleweed, Anden and Pliskin are all climbing into the back of the Sleeping Giant one by one through a window and poking around - finding a door ajar and seeing six Redbrand Ruffians playing cards at a table or standing around watching.
To summerise what happened next, the rogues (and the grappler, Pliskin) decide they can totally tank - they shoot through the door that is ajar, miss alot, hit once and then suddenly they each have two redbrands each. And they get hurt quite a bit! For some reason they split the party, Murden and the Druid at the front door.
So they use their actions or bonus actions to disengage and run...leaving Pliskin there, all alone...who is quickly beaten into the ground by three Redbrands as the rest partly chase after the rogues, after not really getting to attack. But not too far as the Redbrands realised they would be standing out by some bushes and cover with some rogues who might pop out at any second with an attack from stealth!
Then the druid Lucian turns into a bear and show how at low level druids of the circle of the moon are destroyers!
Basically a massacre at the front door, even though the fight in the interior goes quite badly!
Eventually the front door PC's enter and start to attack the Redbrands inside as the rogues snipe from outside - and Pliskin gets an image in his semi concious head of a Nothic who could heal him - apply the healing potion he had on him to Pliskin, magically. Pliskin will have none of this freaky Nothic mind probe stuff though and denies him...fortunately the Redbrands had only beaten Pliskin unconscious (because the PC's hadn't hurt any of them at that point) so he wasn't making death saves. Reflecting on it now I might let the player decide that next time when the enemy only goes to beat them unconcious - whether they want to make death saves (with the chance of a nat 20 reviving them!) or just be unconcious. I think I gave Pliskin an asterix for that - it's my sub currency for character choices which aren't quite worthy of a inspiration point. Get three asterix and you get an inspiration! So he got something from lying down (as well as XP latter!)
I think another PC got knocked out during that battle - the druid certainly got knocked back into druid form at one point, despite being a CR 1 bear with 2D6 damage!
But they beat them in the end!! This encounter which is NOT in the module! Sadly adventure league will not let a GM add treasure and has no budget to let the GM add treasure built into the modules, so fighting at the Sleeping Giant gains the PC's absolutely no loot at all! Woot fun, adventure league!
But beaten and bruised, the party now considers its motives as individuals and what to do next...meanwhile, Sildar is seeking them out with an offer...